Photophobia in migraine: Electrophysiological analysis of chromatic opponent responses via electroretinogram and visual evoked potential.
BackgroundMigraine is characterized by recurrent headaches and sensory hypersensitivities, with photophobia affecting up to 90% of patients during attacks. The mechanisms underlying ictal photophobia remain unclear, potentially involving altered excitability of the visual cortex, trigeminovascular sensitization, or con...